[PATCH] Extra Includes and Libs locations for MacPorts on Mac OSX

This simple patch adds /opt/local/lib and /opt/local/include as  
possible places for libraries and includes respectively on Mac OSX.  
This simplifies compiling Kannel with packages from MacPorts.

------------------------------------- BEGIN  
--------------------------------
Index: configure.in
===================================================================
RCS file: /home/cvs/gateway/configure.in,v
retrieving revision 1.180
diff -u -r1.180 configure.in
--- configure.in        6 Aug 2008 14:22:43 -0000       1.180
+++ configure.in        18 Nov 2008 02:57:03 -0000
@@ -153,6 +153,8 @@
        CFLAGS="$CFLAGS -DDARWIN=1"
      fi
      LIBTOOL="libtool -static -o"
+    LIBS="$LIBS -L/opt/local/lib"
+    CFLAGS="$CFLAGS -I/opt/local/include"
      ;;
    *-linux-*)
      CFLAGS="$CFLAGS -D_XOPEN_SOURCE=600 -D_BSD_SOURCE"
------------------------------------- END  
--------------------------------

After patching, autoconf needs to be run to recreate the ./configure  
script

Regards,

Alejandro Guerrieri